Scraper



N v-11, 1941. A. R. HENRY Em, 2,262,2 3

SCRAPER Filed Aug. 1, 1940 2 Sheets-Sheet l I NVEN TORS BY W Wm A TTORNEY.

Nov. 11, 1941. A. R. HENRY ETAL 2,262,283

SCRAPER Filed Aug- 1940 2 Sheets-Sheet 2 /5 Q9 L9,fl /5 .llk

/3 IIIII- HVVENTORS ATTORNEY.

Patented Nov. 11, 1941 s PATENT OFFICE SCRAPER Albert R. Henry, Salina,

. Topeka,

Application August 1,

Our invention relates to improvements in scrapers designed for grading, road scraping and the like, and adapted for scraping up a load, carrying the load to a selected place and there dumping it.

One of the objects of our invention is to provide a novel scraper of the kind described comprising carrying means, draft means, a bowl having an open bottom and front, rear and side walls, a bottom member in the bowl having a front scraping edge, pivoted on a transverse axis to the draft means and pivoted on a transverse axis to swing from a lowered scraping position at its front edge to a load carrying position closing the open bottom of the bowl, upwardly to a rearwardly facing dumping position, the bowl being pivotally supported on the bottom member on an axis parallel with the other two axes, so as to be bodily lifted when the bottom member swings from the scraping to the dumping position.

Our invention further provides novel means for swinging the bowl to raise its front wall when the bottom member swings from the scraping to the load carrying position, and for raising its rear wall when the bottom member swings from the load carrying to the dumping position.

Our invention provides the bowl under its front wall with a passage for the entrance of scraped material, and novel means for closing the passage when the bowl and bottom member are in the load carrying position, said closure means providing for the passage being left open when the bowl and bottom member are in the scraping and the dumping positions.

A further object of our invention is the provision of a novel scraper of the kind described, which is relatively simple in construction, strong, durable, not likely to get out of order, which is easily operated, and which is efficient in its operation.

The novel features of our invention are hereinafter fully described and claimed.

In the accompanying drawings which illustrate the preferred embodiment of our invention,

Fig. 1 is a side elevation, partly broken away, of the scraper, showing the bottom member in the scraping position, and the bowl lowered at its front wall to receive the scraped material through the passage thereunder, the closure being shown in an open position.

Fig. 2 is a side elevation, partly broken away, of the scraper, showing the bowl and the bottom member in the load carrying position, with the and thence I andMarion 0. Wills,

Kans.

1940, Serial No. 349,318

11 Claims. 4-01. 37-129) of :and midway between the front wall of the bowl raised to permit the closure to close the passage, as shown.

Fig. 3 is a side elevation, partly broken away, of the scraper, showing the bottom member in the dumping position, the closure in the open position, and the bowl bodily lifted and its rear wall raised.

Fig. 4 is a side elevation of the bowl.

.Fig. 5 is a side elevation of the bottom scraper member, its integral triangular parts being omitted, and a part broken away.

, Fig. 6 'is a side elevation of the closure for the passage.

Fig. l, is a plan view of the scraper shown in the load carrying position, with the bottom member closing the open bottom of the bowl, and the closure in the closed position.

Fig. 8 is a plan view, partly broken away, of the scraper, showing the bowl and bottom member in the dumping positions, the passage being shown uncovered by the closure.

Similar characters of reference ilar parts in the different views.

The scraper is provided with draft means comprising, as shown in Figs. 1 to 3, l and 8, a frame consisting of a longitudinal tongue I the rear end of which is integral with a transverse member 2 from the ends of which respectively extend .rearwardly two parallel arms 3. The front end .of the tongue I is adapted to be attached to a tractor, or other wise drawn, as by draft animals.

Located between the arms 3 of the draft frame is a load carrying bowl, designated generally by 4, which bowl has an open bottom, is rectangular designate sim- Y in plan, has a concavo-convex front wall 5, a

.con'cavoconvexrear wall 6, and flat vertical side walls 1. The inner sides of the front and rear walls are concave.

. For scraping material into the bowl 4 through its open bottom, and for closing its open bottom so that the load may be carried, there is provided a bottom scraper member 8 disposed in the bowl, having a front scraping edge 9 and upwardly extending side walls l0.

. .Eor pivotally supporting the bowl 4 on a transverse axis on the bottom member, there are two transversely alined pivot pins II which respectively extend through and are rigidly secured to the walls l0 adjacent to the upper edges therefront and rear ends ofthe bottom member 8. The pins ll respectively extend outwardly through the side walls 1 of the bowl, substantially midway between the front wall '5 and .rear wall 6 thereof, and pivotal'ly support the bowl on a transverse horizontal axis, so that the bowl can swing upwardly and downwardly at its front and rear Walls.

The bottom member 8 is composed of two plates, one of which overlies the other and between and to which is rigidly fastened a transverse horizontal shaft I2 having projecting ends which are respectively pivoted in the draft arms 3 adjacent to the rear ends of the arms which the shaft I2 supports.

At the outer side of'the bowl 4, at opposite sides thereof are two pairs of triangular plates I3 spaced apart and disposed vertically, and through which secured, the ends of the shaft I2. are also respectively extended through and rigidly securedto the two pairs of triangular plates I3, whereby said plates become integral parts of and move with the bottom member 8.

Carrying means comprising, as shown, two

and are integrally fastened to the two pairs of triangular plates I3. The spindles I5 serve as is provided at opposite sides respectively of the piston head I'I therein, with two pipes 2|, connected to a suitable pressure fluid supply means, not shown, by which the pistons I 6-I I, are simultaneously reciprocated in the same direction.

When the'piston heads I1 move rearwardly from the forward position,,shown in Fig. 1, to the ing position, shown in Figs. 2 and 7, there is provided a U shaped closure 23 having a concave-convex wall at the outer side of the front wall 5, and having two rearwardly extending arms 24, pivoted by two pins 25 respectively to the sides 1 of the bowl a short distance above The closure 23-44 is adapted to swing downwardly at its front end by gravity to a position in which it can close the passage 22, when the bowl 4 and bottom member 8 are in the loadcarrying position, shown in Figs. 2 and 7 For supporting the closure 23-24 in the open position when the bottom member 8 is'in the scraping position, shown in Fig. 1, and in the closed position when the bottom member is in respectively extend, and are rigthe load carrying position, shown in Figs. 2 and 7, each arm 24 of the closure has at its lower edge an outwardly extending flange 26. The flanges 26 respectively rest upon two inwardly extending rollers 21 mounted respectively on the flanges 26, which extend upwardly at their rear end portions. The flanges 26 engage with the pins 28 just as the rollers 27 disengage with the flanges 26, as will be explained hereinafter.

Means are provided to swing the bowl 4 on its axis II to raise its front wall, when the bottom member swings from the scraping to the load carrying position, and for raising the rear wall of the bowl when the bottom member swings from the load carrying to the dumping position. The front and side As shown in Figs. 2 and 3, the pins II extend through said side arms. Two forwardly extending arms 30 have their rear ends fastened to the front middle portion of the fender Mounted in the forward ends of the arms 30 is a transverse pin 3| which extends through and travels in a longitudinal guiding slot 32 provided in a-relatively thin longitudinal wall 33, which is integral with and extends upwardly from the tongue I of the draft frame.

The slot 32 from its front end extends upwardly and rearwardly, and thence downwardly and rearwardly. When thebottom member 8 is in the scraping position, shown in Fig. 1, the pin 3I be lowered, of the side walls on When the piston I 6-I1 and cylinders I8, until it is desired to dump the load. In Figs. 2 and 7, the parts are shown in the load carrying positions. I

material passing downwardly through the passage 22 when the load is being carried to the dumping place.

When it is desired to dump the load, the operator causes the pressure fluid to force thepistons l6-ll further rearwardly, thus swinging the bottom member and its triangular plates further in a counterclockwise direction, as viewed in Fig. 3, and to the dumping position, shown in Fig. 3 and in Fig. 8. Such swinging of the bottom member 8 to the dumping position will bodily raise the bowl 4 upwardly and will further move the wheels 14 rearwardly, causing the rollers 21 to be disengaged from the flanges 26, at the same time causing the pins 28 to engage the rear side of the flanges 26 to hold the closure 23-24 in the open position, as shown in Fig. 3.

As the wheels 14 move rearwardly carrying the bowl 4 and bottom member rearwardly, the pin 3| will lower in the slot 32 from the elevated position shown in Fig. 2, and the pin will travel rearwardly to the rear end of the slot 32, as shown in Fig. 3, thus swinging the bowl 4 on its pivot pins II to raise the rear wall I of the bowl to the dumping position, shown in Fig. 3.

With the rear wall I of the bowl so raised, and the bottom member 8 in the rearwardly facing dumping position, and the closure 23-44 in the open position, the collected scraped material will be freely discharged from the bowl by gravity.

After dumping the load, and it is desired again to scrape up a load, the operator causes the fluid pressure to return the pistons I6ll forwardly to their initial positions, shown in Fig. 1, thereby causing the bowl, bottom member and the other movable parts to reassume the positions shown in Fig. 1 thus completing a cycle of operations.

From the foregoing description, it will be noted that the bottom scraping member 8 is swung on its axis l2 by means independent of the bowl 4, the cylinders l8 pivoted to the draft frame transverse member 2, and the piston rods l6 pivoted to the triangular plates 13, integral portions of said bottom member.

It will also be noted that the bowl 4 is swung on its axis H by means of its arms 30 having traveling engagement with the slotted wall 33, which is integral with the tongue I of the draft frame.

Many modifications of our invention, within the scope of the appended claims may be made, without departing from the spirit of our invention.

What we claim is:

1. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls, a bottom member in said bowl having a front scraping edge and pivoted to said draft means on a transverse axis and pivoted to said carrying means on an axis parallel with said axis, to swing upwardly at its front edge from a scraping position to, and past a load carrying position, to a rearwardly facing dumping position, means pivotally supporting said bowl on said bottom member on an axis parallel with said axes and disposed to bodily raise said bowl when said bottom member is swung upwardly at its front edge from a scraping to a dumping position, means connecting said bottom member with said draft means for so swinging said bottom member, and means for swinging said bowl to raise its front wall when said bottom member swings from a scraping to a load carrying position and for swinging said bowl to raise its rear wall when said bottom member swings from the load carrying position to the dumping position.

2. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls and an arm extending forwardly from its front end, a bottom member in said bowl having a front scraping edge and pivoted to said draft means on a transverse axis and pivoted to said carrying means on an axis parallel with said axis, to swing upwardly at its front edge from a scraping position to, and past a load carrying position, to a rearwardly facing dumping position, means pivotally supporting said bowl on said bottom member on an axis parallel with said axes and disposed to bodily raise said bowl when said bottom member is swung upwardly at its front edge from a scraping to a dumping position, means independent of said bowl for so swinging said bottom member, and guiding means on said draft means with which said arm has traveling engagement for swinging said bowl to raise its front wall when said bottom member swings from a scraping to a loading position and for swinging said bowl to raise its rear wall when said bottom member swings from the load carrying to the dumping position.

3. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls and an arm extending forwardly from its front end, a bottom member in said bowl having a front scraping edge and pivoted to said draft means on a transverse axis and pivoted to said carrying means on an axis parallel to said axis, to swing upwardly at its front edge from a scraping position to, and past a load carrying position, to a rearwardly facing dumping position, means for oscillating said bottom member on its axis, means pivotally supporting said bowl on said bottom member on an axis parallel with said axes, and disposed to raise said bowl bodily when said bottom member swings from a scraping to a dumping position, and means on said draft means having a longitudinal guiding slot, which rises upwardly and rearwardly from its front end and thence downwardly and rearwardly and in which slot said arm has reciprocative traveling engagement, by which said bowl is swung to raise its front wall and then swung to raise its rear wall while said bottom member swings from the scraping to the dumping position.

4. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls and having a passage under its front wall for entrance of scraped material, a bottom member in said bowl having a front scraping edge and pivoted on said draft means on a transverse axis and pivoted on said carrying means on an axis parallel with said axis to swing upwardly at its front edge from a scraping to a load carrying position closing said open bottom, and then upwardly to a rearwardly facing dumping position, means for so swinging said bottom member, means pivoting said bowl on said bottom member on an axis parallel with said axes, and means for closing said passage when said bottom member is in the load carrying position and operative to leave said passage open when said bottom member is in the scraping position.

5. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls and having a passage under said front wall for entrance of scraped material, a bottom member in said bowl having a front scraping edge and pivoted on said draft means on a transverse axis and pivoted on said carrying means on an axis parallel with said axis to swing upwardly at its front edge from a scraping to a load carrying position closing said open bottom, and then upwardly to a rearwardly facing dumping position, mens for so swinging said bottom member, means pivoting said bowl on said bottom member on an axis parallel with said axes, and means for closing said passage when said bottom member is in the load carrying position and operative to leave said passage open when said bottom member is in the scraping and dumping positions.

6. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls and having a passage under said front wall for entrance of scraped material, a bottom member in said bowl having a front scraping edge and pivoted on said draft means on a transverse axis and. pivoted on said carrying means on an. axis parallel with said axis to swing upwardly at its front edge from a scraping to a load carrying position closing said open bottom, and then upwardly to a rearwardly facing dumping position, means for so swinging said bottom member, means pivoting said bowl on said bottom member on an axis parallel with said axes, means for swinging said bowl to raise its front wall when said bottom member swings from the scraping to the load carrying position, and means for closing said passage when said bowl is so swung.

7. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls and having a passage under said front wall for the entrance of scraped material, a bottom member in said bowl having a front scraping edge and pivoted on said draft means on a transverse axis and pivoted on said carrying means on an axis parallel with said axis to swing upwardly at its front edge from a scraping to a load carrying position closing said open bottom, and then upwardly to a rearwardly facing dumping position, means for so swinging said bottom member, means pivoting said bowl on said bottom member on an axis parallel with said axes, means for swinging said bowl to raise its front wall when said bottom member swings from the scraping to the load carrying position and for raising its rear wall when said bottom member swings from the load carrying to the dumping position, and means for closing said passage when bottom member is in the load carrying position and which leaves said passage open when said bottom member is in the scraping and dumping positions.

8. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls and having a passage under said front wall for the entrance of scraped material, a bottom member in said bowl having a front scraping edge and pivoted on said draft means on a transverse axis and pivoted on said carrying means on an axis parallel with said axis to swing upwardly at its front edge from a scraping to a load carrying position closing said open bottom, and then upwardly to a rearwardly facing dumping position, means for so swinging said bottom member, means pivoting said bowl to said bottom member on an axis parallel with said axes, means for swinging said bowl to raise its front wall when said bottom member swings from the scraping to the load carrying position and for raising its rear wall and lowering its front wall when said bottom member swings from the load carrying to the dumping position, a closure for said passage, means pivotally supporting said closure so that it is adapted to swing downwardly by gravity to close said passage, and means supporting said closure in the open position when said bottom member is in the scraping position and which supports said closure in the closed position when said bowl swings to raise its front edge when said bottom member swings from the scraping to the load carrying position.

9. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having'an open bottom and front, rear and side walls and having under said front wall a passage for the entrance of scraped material, a bottom member in said bowl having a front scraping edge and pivoted on said draft means on a transverse axis and pivoted on said carrying means on an axis parallel to said axis to swing upwardly at its front edge from a scraping to a load carrying position closing said open bottom, and then upwardly to a rearwardly facing dumping position, means for so swinging said bottom member,

' means pivoting said bowl to said bottom member on an axis parallel with said axes, means for swinging said bowl to raise its front wall when said bottom member swings from a scraping to the load carrying position and for raising its rear wall and lowering its front wall when said bottom member swings from the load carrying to the dumping position, a closure, means pivotally supporting said closure so that it is adapted to swing downwardly by gravity to close said passage, means supporting said closure in the open position when said bottom member is in the scraping position and which supports said closure in the closed position when said bowl swings to raise its front wall, and means supporting said closure in the open position when said bowl swings to raise its rear wall and lower its front wall.

10. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side walls, a bottom member in said bowl having a front scraping edge and pivoted on said draft means on a transverse axis and pivoted on said carrying means on an axis parallel with said axis to swing upwardly at its front edge from a scraping to a load carrying position closing said open bottom, and then upwardly to a rearwardly facing dumping position, means pivoting said bowl to said bottom member on an axis parallel with said axes, the lines connecting said axes forming a triangle, said axis on said carrying means being the center around which the other two axes revolve, means connected to said draft means and to said bottom member eccentric to said axis on said carrying means for so swinging said bottom member, and means connecting said bowl with said draft means by which said bowl swings upwardly on its axis to raise its front wall when said bottom member swings from the scraping tothe load carrying position and swings upwardly at its rear wall when said bottom member swings from the load carrying to the dumping position.

11. In a scraper, carrying means adapted for travel on the ground, a draft means, a bowl having an open bottom and front, rear and side with said axes, and means connecting said bowl with said draft means by which said bowl wi11 be swung on its axes to raise its front wall when said bottom member swings from the scraping to the load carrying position, and will be swung to raise its rear wall when said bottom member swings from the load carrying to the dumping position.

ALBERT R. HENRY.

MARION C. WILLS. 

